The Fair Housing Act prohibits discrimination in real estate related transactions, or in the terms of conditional of such a transaction, race, color, religion, sex, disability, familial status, or national origin. The Federal agency that is responsible for enforcing this law is the U. S. Department of Housing and Urban Development. If a person believes that they have been discriminated against in violation of this law, they should contact the U. S. Department of Housing and Urban Development, Washington, DC 20410 or call (800) 669-9777.